TWI399666B - Controlling method based on touch operations - Google Patents

Description

Touch control method

The invention relates to a human-computer interaction method, in particular to a touch control method.

In order to meet the user's pursuit of large screens, more and more electronic devices use touch screens to save space occupied by traditional buttons, such as mobile phones.

When the user operates through the touch screen, the selected object is usually operated by clicking the displayed image button, such as the rotation and zooming of the image. With the above touch-and-touch method, the operation is not flexible enough.

In view of this, it is necessary to provide a touch control method that is relatively flexible in operation.

A touch control method includes the steps of: determining an object to be operated according to a user operation; detecting a coordinate A (X _A , Y _A ) of the first touch point; and detecting a coordinate B of the initial point of the second touch point (X _B , Y _B ) determining the operation center point C (X _C , Y _C ) according to the coordinate A (X _A , Y _A ) of the first touch point and the coordinate B (X _B , Y _B ) of the initial point of the second touch point; The coordinates B' (X _B' , Y _B' ) of the point at which the second touch point moves; according to the coordinates C (X _C , Y _C ), B (X _B , Y _B ) and B' (X _B' , Y _B' ) calculates the angle α between the two vectors CB and CB'; rotates the selected object by a degree around the center of operation C (X _C , Y _C ).

A touch control method includes the steps of: determining an object to be operated according to a user operation; detecting a coordinate A (X _A , Y _A ) of the first touch point; and detecting a coordinate B of the initial point of the second touch point (X _B , Y _B ); determining the operation center point C (X _C , Y _C ) according to the coordinate A (X _A , Y _A ) of the first touch point; detecting the coordinate B' (X _{B '} , Y of the point at which the second touch point moves _B' ); calculating the angle α between the two vectors CB and CB' according to the coordinates C(X _C , Y _C ), B(X _B , Y _B ) and B'(X _B' , Y _B' ); The operation center point C (X _C , Y _C ) centers on the selected object α degrees.

In the above touch control method, the selected object can be changed according to the movement trajectory of the second touch point, and the user is more flexible in operation.

The touch screen can usually position the touch point according to various methods such as capacitive mode and resistance mode. As shown in FIG. 1 , for convenience of understanding, the touch screen 100 is a rectangle as an example. A Cartesian coordinate system is defined on the touch screen 100. One end of the touch screen 100 is an origin O, and the X axis and the Y axis respectively extend along two sides connected to the end point. As such, each point on touch screen 100 has a fixed coordinate value.

As shown in FIG. 2, based on the touch screen positioning technology described above, the present invention provides a touch control method, which can improve the flexibility of user operation. The touch control method includes the following steps.

Step S900, determining an object to be operated according to a user operation. In detail, if the user selects an area or an object of the touch screen 100, the object in the certain area or the selected object is the object to be operated; if the user does not target an area or a certain touch screen 100 When the object is selected, all the objects displayed on the touch screen 100 are taken as the whole to be operated.

Step S902, detecting the coordinates A (X _A , Y _A ) of the first touch point (please refer to FIG. 1 at the same time). The first touch point is a fixed point, which can be determined by a double-click method, that is, when the user double-clicks on the touch screen 100, the point serves as the first touch point. For the convenience of the user, the first touch point can be graphically displayed on the display screen, for example, displayed in a star shape.

Step S904, detecting a coordinate B (X _B , Y _B ) of the initial point of the second touch point. The second touch point is a moving point, which can be determined by touch. That is, if the user touches the touch screen 100 again within a predetermined time after determining the first touch point, the initial position of the touch is taken as the initial point of the second touch point. In the present embodiment, the predetermined time is 1 second.

Step S906, calculating the distance between the initial points of the first touch point and the second touch point according to the coordinates A(X _A , Y _A ) and the coordinate B .

In step S908, it is determined whether the distance D1 is greater than or a predetermined distance R. If the distance D1 is greater than or equal to the predetermined distance R, the process proceeds to step S912. If the distance D1 is smaller than the predetermined distance R, the process proceeds to step S910.

Step S910, issuing a prompt message prompting the user that the initial point of the second touch point is invalid, please input again; and returning to step S904. The prompt information may be sound information, graphic information, etc., such as disappearing the graphic indicating the first touch point as a kind of graphic information.

In step S912, the operation center point C (X _C , Y _C ) is determined according to the coordinates A (X _A , Y _A ) and the coordinates B (X _B , Y _B ). The operation center point C (X _C , Y _C ) can be calculated according to the user's needs through a predetermined calculation formula. In the present embodiment, the operation center point C (X _C , Y _C ) is the intermediate point of the line segment between the first touch point and the initial point of the second touch point, and the predetermined expression is X _{C =} ( X _A + X _B )/2, Y _C =( Y _A + Y _B )/2. In other embodiments, the operation center point C (X _C , Y _C ) may also be calculated only from the coordinates A (X _A , Y _A ), such as the operation center point C (X _C , Y _C ) being the first touch. Point, then the predetermined expression is X _C = X _A , Y _C = Y _A .

Step S914, detecting a coordinate B' (X _{B '} , Y _{B '} ) of the point at which the second touch point moves.

Step S916, calculating an angle between the two vectors CB and CB' according to the coordinates C(X _C , Y _C ), the coordinates B(X _B , Y _B ), and the coordinates B′(X _B′ , Y _B′ ).

In step S918, it is determined whether the angle α is greater than or equal to a predetermined angle. If the angle α is greater than or equal to the predetermined angle, the process proceeds to step S920. If the angle α is smaller than the predetermined angle, the process proceeds to step S924. In the present embodiment, the predetermined angle is 5 degrees.

In step S920, the rotation direction from the vector CB to the vector CB' is calculated according to the coordinates B (X _B , Y _B ) and the coordinates B' (X _{B '} , Y _{B '} ). In the present embodiment, the direction of rotation is first obtained by comparing the sizes of Y _B and Y _B′ . If Y _{B′ is} greater than Y _B , the direction of rotation is clockwise; if Y _{B′ is} less than Y _B , the direction of rotation is Counterclockwise. If Y _B' is equal to Y _B , then the magnitudes of X _B and X _{B '} are compared to determine the direction of rotation. If X _{B' is} greater than X _B , the direction of rotation is clockwise. If X _{B' is} less than X _B , the direction of rotation is counterclockwise.

In step S922, the selected object is rotated by a degree in the calculated rotation direction centering on the operation center point C (X _C , Y _C ), and the flow proceeds to step S924.

Step S924, detecting whether the second touch point is released. If the second touch point is released, the process proceeds to step S926. If the second touch point is not released, then return to step S914.

Step S926, the graphic indicating the first touch point is eliminated.

In the above touch control method, the selected object can be changed instantly according to the movement trajectory of the second touch point, and the selected object change process is relatively intuitive, and the user is more flexible in operation.

For the convenience of the user, the motion track of the second touch point can also be graphically marked, and the graphic mark is eliminated when the second touch point is released.

100. . . touch screen

S900~S926. . . Touch control method steps

FIG. 1 is a schematic diagram of a touch screen after defining a Cartesian coordinate system.

2 is a flow chart of a touch control method of a preferred embodiment.

S900~S926. . . Touch control method steps

Claims (14)

A touch control method includes the steps of: determining an object to be operated according to a user operation; detecting a coordinate A (X _A , Y _A ) of the first touch point; and detecting a coordinate B of the initial point of the second touch point (X _B , Y _B ) determining the operation center point C (X _C , Y _C ) according to the coordinate A (X _A , Y _A ) of the first touch point and the coordinate B (X _B , Y _B ) of the initial point of the second touch point; The coordinates B' (X _B' , Y _B' ) of the point at which the second touch point moves; according to the coordinates C (X _C , Y _C ), B (X _B , Y _B ) and B' (X _B' , Y _B' ) calculates the angle α between the two vectors CB and CB'; rotates the selected object by a degree around the center of operation C (X _C , Y _C ). The touch control method according to claim 1, wherein the touch control method further comprises the following steps: calculating from the coordinates B (X _B , Y _B ) and the coordinates B′ (X _B′ , Y _B′ ) The vector CB is rotated to the rotation direction of the vector CB'; the selected object is rotated by a degree in the calculated rotation direction centering on the operation center point C (X _C , Y _C ). The touch control method according to claim 2, wherein the touch control method adopts the following comparison manner to obtain a rotation direction, and first compares the sizes of Y _B and Y _B′ to obtain a rotation direction, if Y _B′ If it is greater than Y _B , the direction of rotation is clockwise; if Y _{B' is} less than Y _B , the direction of rotation is counterclockwise; if Y _B' is equal to Y _B , then the magnitude of X _B and X _{B '} is compared to determine the rotation Direction, if X _{B' is} greater than X _B , the direction of rotation is clockwise; if X _{B' is} less than X _B , the direction of rotation is counterclockwise. The touch control method according to claim 1, wherein the touch control method further comprises the steps of: determining whether the angle α is greater than or equal to a predetermined angle; and if the angle α is greater than or equal to the predetermined angle, operating the center point C (X _C , Y _C ) centered the selected object by a degree of rotation. The touch control method of claim 1, wherein the touch control method further comprises the step of: calculating a first touch point according to the coordinates A (X _A , Y _A ) and the coordinates B (X _B , Y _B ) And a distance D1 between the initial point of the second touch point; determining whether the distance D1 is greater than or equal to the predetermined distance R; and if the distance D1 is greater than or equal to the predetermined distance R, according to the coordinate A of the first touch point (X _A , Y _A And the coordinate B (X _B , Y _B ) of the initial point of the second touch point determines the operation center point C (X _C , Y _C ). The touch control method of claim 5, wherein the touch control method further comprises the step of: if the distance D1 is less than the predetermined distance R, issuing a prompt message prompting the user that the initial point of the second touch point is invalid. , please re-enter and return to the step of detecting the coordinate B (X _B , Y _B ) of the initial point of the second touch point. The touch control method of claim 1, wherein the touch control method further comprises the steps of: determining whether the second touch point is released; if the second touch point is not released, returning to detecting the second touch point The step of the coordinates B'(X _B' , Y _B' ) of the point after the movement. The touch control method of claim 1, wherein the operation center point C (X _C , Y _C ) is a midpoint of a line segment between an initial point of the first touch point and the second touch point, wherein X _C = ( X _A + X _B )/2, Y _C = ( Y _A + Y _B )/2. A touch control method includes the steps of: determining an object to be operated according to a user operation; detecting a coordinate A (X _A , Y _A ) of the first touch point; and detecting a coordinate B of the initial point of the second touch point (X _B , Y _B ); determining the operation center point C (X _C , Y _C ) according to the coordinate A (X _A , Y _A ) of the first touch point; detecting the coordinate B' (X _{B '} , Y of the point at which the second touch point moves _B' ); calculating the angle α between the two vectors CB and CB' according to the coordinates C(X _C , Y _C ), B(X _B , Y _B ) and B'(X _B' , Y _B' ); The operation center point C (X _C , Y _C ) centers on the selected object α degrees. The touch control method of claim 9, wherein the touch control method further comprises the steps of: calculating from the coordinates B (X _B , Y _B ) and the coordinates B′ (X _B′ , Y _B′ ) The vector CB is rotated to the direction of rotation of the vector CB'; the selected object is α degrees in the calculated direction of rotation centered on the center of operation C (X _C , Y _C ). The touch control method according to claim 10, wherein the touch control method adopts the following comparison manner to obtain a rotation direction, and first compares the sizes of Y _B and Y _B′ to obtain a rotation direction, if Y _B′ If it is greater than Y _B , the direction of rotation is clockwise; if Y _{B' is} less than Y _B , the direction of rotation is counterclockwise; if Y _B' is equal to Y _B , then the magnitude of X _B and X _{B '} is compared to determine the rotation Direction, if X _{B' is} greater than X _B , the direction of rotation is clockwise; if X _{B' is} less than X _B , the direction of rotation is counterclockwise. The touch control method of claim 9, wherein the touch control method further comprises the steps of: determining whether the angle α is greater than or equal to a predetermined angle; and if the angle α is greater than or equal to the predetermined angle, operating the center point C (X _C , Y _C ) centered on the selected object α degrees. The touch control method according to claim 9, wherein the operation center point C (X _C , Y _C ) is a first touch point, wherein X _C =X _A , Y _C =Y _A . The touch control method of claim 9, wherein the touch control method further comprises the steps of: determining whether the second touch point is released; if the second touch point is not released, returning to detecting the second touch point The step of the coordinates B'(X _B' , Y _B' ) of the point after the movement.